[Solved] What is the issue with this custom serializer field code?class MyField(serializers.Field): def to_internal_value(self, data): return data.upper() | Django

Django - DRF Advanced Features

What is the issue with this custom serializer field code?

class MyField(serializers.Field):
    def to_internal_value(self, data):
        return data.upper()

Ato_internal_value should not be overridden in custom fields

BThe to_internal_value method should return a boolean

CThe class must inherit from serializers.Serializer, not serializers.Field

DIt does not validate that 'data' is a string before calling upper()

Step-by-Step Solution

Solution:

Step 1: Analyze the method
The method calls data.upper(), which only works on strings.
Step 2: Identify missing validation
There is no check to ensure 'data' is a string, so non-string inputs will cause errors.
Final Answer:
It does not validate that 'data' is a string before calling upper() -> Option D
Quick Check:
Always validate input types before string operations [OK]

Quick Trick: Check input type before string methods [OK]

Common Mistakes:

MISTAKES

Master "DRF Advanced Features" in Django

9 interactive learning modes - each teaches the same concept differently

More Django Quizzes

What is the issue with this custom serializer field code?